Table 3. Average crystalline domain size, lattice parameter, unit volume, number of unit cells, number of domains, B factor, lattice distortion, and domain surface area in fcc Ru NPs obtained using the Rietveld refinement method.

Sample	5	6	7	8
Crystalline domain size (nm)	1.24	1.26	1.42	1.67
a (Å)	2.6478 ± 0.0018	2.6814 ± 0.0019	2.6542 ± 0.0019	2.6657 ± 0.0016
c (Å)	4.1469 ± 0.0058	4.2175 ± 0.0060	4.1803 ± 0.0062	4.2260 ± 0.0052
Unit volume (Å3)	25.1773	26.2607	25.5041	26.0054
Number of unit cells	39.65	40.07	58.25	93.61
Number of domains (×1016)	11.66	11.53	7.93	4.94
B factor (Å2)	0.17 ± 0.07	0.17 ± 0.07	0.19 ± 0.09	0.35 ± 0.09
Lattice distortion at (002) plane	0.0400	0.0393	0.0346	0.0286
Domain surface area (×1017 nm2)	5.630	5.751	5.025	4.325